A high-pressure (> 3 MPa) on-chip injector has been developed for microchip applications including HPLC. The mechanical injector is implemented using in situ photopolymerization of fluorinated acrylates inside wet-etched silica microchips. The injector allows reproducible injections as small as 180 pL with < 250 ms duration. The injector operated robustly over 60 days and over 1000 injections. ...

Controlling the flame shape and its liftoff height is one of main issues for oxy-flames to limit heat transfer solid components injector. An extensive experimental study carried out analyze effects co- counter-swirl on flow patterns non-premixed stabilized above a coaxial injector when both inner fuel annular oxidizer streams are swirled. A swirl level greater than 0.6 in stream shown yield com...

We describe a very high luminosity electron-positron collider that operates in the 4s energy range. Trajectories intersect with a small horizontal crossing angle so that closely spaced bunches collide only at the interaction point. An electrostatic deflector steers the counter-rotating beams into side-by-side vacuum chambers that share a common dipole guide field. The beams also share supercond...

The needle lift and return timing of a CRDI (common rail direct injection) injector were investigated using an accelerometer and the Bosch injection rate measurement method. The Bosch method was used to measure the fuel injection rate shape when fuel was injected with several patterns. An accelerometer was mounted on the outside of the injector to catch the needle lift and return timing of the ...

We have simulat.ed the SLC injector from the thermionic gun through the first accelerating section and used the resulting parameters to tune the injector for optimum performance and-high charge transport. Simulations-are conducted using PARMELA, a three-dimensional ray-trace code with a two-dimensional space-charge mod$The magnetic field profile due to the existing magnetic optics is calculated...

BACKGROUND In view of the increasing prevalence of food allergies, there has been an associated increase in frequency of situations requiring an emergency response for anaphylaxis at the home, childcare facilities and educational institutions. OBJECTIVE To clarify the situation of adrenaline auto-injector administration in nursery/kindergarten/school, we carried out a questionnaire survey on ...

Twomodels are proposed for rotating detonation engine performance. The first model is motivated bymodels of pulse detonation engine performance which are based on the pressure-time history within the detonation tube. The present work extends those ideas to treat rotating detonation engines with a control volume analysis that considers the forces within the combustion chamber. The key scaling pa...